Load Capacity: 2500 to 20000 LBS Tread Material: Poly Urethane wheels Core Material: Cast Iron Fork Material: Zinc Plated Powder coated Steel Mounting Type: Plate Swivel Wheel Diameter: 5 6 8 10 12 inch Tread Width: 50 to 100mm Tread Color: As your requirements Bearing Type: Double Ball Bearings Roller Bearing Application: Shipping Container caster wheels